US8670438B2 - Communication system, base station apparatus, and mobile station apparatus - Google Patents

Communication system, base station apparatus, and mobile station apparatus Download PDF

Info

Publication number
US8670438B2
US8670438B2 US12/935,294 US93529409A US8670438B2 US 8670438 B2 US8670438 B2 US 8670438B2 US 93529409 A US93529409 A US 93529409A US 8670438 B2 US8670438 B2 US 8670438B2
Authority
US
United States
Prior art keywords
station apparatus
communication
downlink
channel
mobile station
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active, expires
Application number
US12/935,294
Other languages
English (en)
Other versions
US20110034177A1 (en
Inventor
Wahoh Oh
Katsuyuki Machino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Assigned to SHARP KABUSHIKI KAISHA reassignment SHARP KABUSHIKI KAISHA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MACHINO, KATSUYUKI, OH, WAHOH
Publication of US20110034177A1 publication Critical patent/US20110034177A1/en
Application granted granted Critical
Publication of US8670438B2 publication Critical patent/US8670438B2/en
Active legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]
    • H04J11/0086—Search parameters, e.g. search strategy, accumulation length, range of search, thresholds
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/32—Hierarchical cell structures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria

Definitions

  • the present invention relates to a technology of performing radio communication between a base station apparatus and a mobile station apparatus using a plurality of frequency layers having frequency bands different from each other.
  • IMT-Advanced assumes realization of 100 Mbps for high speed movement and even 1 Gbps for high speed movement, with its available frequency band determined in WRC07 (World Radio Conference 07) held by ITU-R (International Telecommunication Union Radio communications Sector) in the autumn of 2007. Standard formulation works subsequently became active through 2008 to 2009, and its services are expected to be launched in 2010 or later.
  • existing carriers providing second generation (2G) and third generation (3G) mobile communication services may consider that it is desirable to provide IMT-Advanced services based on existing base station locations, and therefore they may have a negative attitude toward introducing new technology with regard to base station placement or new facility addition such as a repeater station, a relay station, or DWCS (Distributed Wireless Communication Systems).
  • 2G second generation
  • 3G third generation
  • BW 2 Band Width 2
  • UE categories category of the mobile station apparatus
  • Downlink radio channels include radio common channels required to cover the entire cell area and assure a predetermined reception quality in a mobile station apparatus at the cell edge.
  • These radio common channels which employ, for example, a low-rate modulation system such as BPSK: Binary Phase Shift Keying or QPSK: Quadrature Phase Shift Keying, an encoding system with high redundancy, and radio transmission system that is highly-resistant to interference such as iterative transmission along the time/frequency axis, or a spread spectrum system with a high spreading factor, assure predetermined reception quality down to the cell edge.
  • a low-rate modulation system such as BPSK: Binary Phase Shift Keying or QPSK: Quadrature Phase Shift Keying
  • an encoding system with high redundancy and radio transmission system that is highly-resistant to interference such as iterative transmission along the time/frequency axis, or a spread spectrum system with a high spreading factor
  • the radio common channel has a low data transmission speed in order to assure a predetermined reception quality.
  • control data of a mobile communication system such as identical synchronization data, broadcast data or common control data, i.e., a radio common control channel, and broadcast data for providing services to a plurality of mobile station apparatuses (e.g., MBMS data described below), i.e., a radio common traffic channel
  • a radio common control channel and a radio common traffic channel required to cover the entire cell area and assure a predetermined reception quality down to a mobile station apparatus at the cell edge are respectively referred to as DCCCCH (Downlink Cell Common Control Channel) and DCCTCH (Downlink Cell Common Traffic Channel).
  • DCCCCH Downlink Cell Common Control Channel
  • DCCTCH Downlink Cell Common Traffic Channel
  • Downlink radio channels include radio dedicated channels required to assure a predetermined reception quality down to a mobile station apparatus moving within a cell area without having to cover the entire cell area. These radio dedicated channels set the modulation system according to the distance between the mobile station apparatus and the base station apparatus, radio propagation loss, variation of radio propagation signal power, or the like.
  • a radio propagation loss between the mobile station apparatus and the base station apparatus is large, a low-rate modulation system, such as BPSK or QPSK, an encoding system with high redundancy, and a radio transmission system that is highly-resistant to interference such as iterative transmission along the time/frequency axis, a spread spectrum system with a high spreading factor, or high transmission power are used, whereas a high-rate modulation system such as 16 QAM (16 Quadrature Amplitude Modulation) or 64 QAM, an encoding system with low redundancy, and wireless transmission methods having a high data transmission speed with a low transmission power such as no iterative transmission along the time/frequency axis, a spread spectrum system with a low spreading factor, and low transmission power are used if radio propagation loss between the mobile station apparatus and the base station apparatus is small, which assures a required reception quality of the mobile station apparatus.
  • BPSK or QPSK BPSK or QPSK
  • an encoding system with high redundancy and a radio transmission
  • a radio dedicated traffic channel As individual transmission data in a mobile communication system, there are, for example, user data to individual mobile station apparatuses, i.e., a radio dedicated traffic channel, and radio resource allocation information data of user data and user data demodulation information data such as degree of modulation/encoding system, i.e., a radio dedicated control channel.
  • a radio dedicated channel and a radio dedicated traffic channel required to assure a predetermined reception quality down to a mobile station apparatus moving within a cell area without having to cover the entire cell area are respectively referred to as DCDCCH (Downlink Cell Dedicated Control Channel) and DCDTCH (Downlink Cell Dedicated Traffic Channel).
  • DCDCCH Downlink Cell Dedicated Control Channel
  • DCDTCH Downlink Cell Dedicated Traffic Channel
  • FIG. 6 illustrates a radio frame configuration of the downlink of EUTRA.
  • a method is employed which multiplexes time and frequencies with TDM (Time Division Multiplexing), FDM (Frequency Division Multiplexing), or a combination of TDM and FDM, using resources of the frequency axis (in units of subcarrier) and the time axis (in units of OFDM symbol) of OFDM (Orthogonal Frequency Division Multiplexing) signals, as shown in FIG. 6 .
  • TDM Time Division Multiplexing
  • FDM Frequency Division Multiplexing
  • OFDM Orthogonal Frequency Division Multiplexing
  • the downlink radio frame is composed of a frequency bandwidth Bch which is a collection of a plurality of subcarriers along the frequency axis direction and a plurality of two-dimensional PRBs (Physical Resource Block) by the SF (Sub-frame) of the time axis.
  • a frequency bandwidth Bch which is a collection of a plurality of subcarriers along the frequency axis direction and a plurality of two-dimensional PRBs (Physical Resource Block) by the SF (Sub-frame) of the time axis.
  • the entire downlink spectrum system frequency bandwidth BW specific to the base station
  • the frequency bandwidth Bch of PRB is set to 180 kHz
  • the subframe SF is set to 0.5 ms
  • the subcarrier frequency bandwidth Bsc is set to 15 kHz
  • a single radio frame is set to 10 ms. Twelve subcarriers and one subframe compose a radio physical resource block PRB.
  • Ts denotes the OFDM symbol length.
  • EUTRA technology specification document of 3GPP describes a radio channel configuration of EUTRA.
  • the uplink uses the natural frequency bandwidth BW of the base station apparatus and the following radio physical channels are mapped.
  • PRACH Physical Random Access Channel
  • RACH Random Access Channel
  • RACH is used at the time of initial access, handover, or when uplink or downlink communication data is generated.
  • RACHs can be classified into the collision type in which RACHs from respective mobile station apparatuses collide on the radio resource and the non-collision type in which RACHs from respective mobile station apparatuses can be separated on the radio resource.
  • PUCCH Physical Uplink Control Channel transmits control information from the mobile station apparatus.
  • the mobile station apparatus is used, according to the downlink reception conditions, for HARQ (Hybrid Automatic Repeat Request), an affirmative response ACK (Acknowledgement) or a negative response NAK (Negative Acknowledgement), transmission of information bits, transmission of SR (Scheduling Request) information bits requesting allocation of uplink radio resource to the base station apparatus, transmission of information bits of downlink CQI (Channel Quality Indicator) estimated by the mobile station apparatus, transmission of the number of data streams NLR (Number of Layers Rank, which depends on the number of transmission antennas) and transmission PCI (Pre-coding Codebook Index) information bits of a base station apparatus selected according to the reception conditions of the mobile station apparatus, or transmission of control information bits such as the result of measurement of the mobile station apparatus.
  • PUSCH Physical Uplink Shared Channel
  • UL-SCH Uplink Shared Channel
  • CCCH Common Control Channel
  • DCCH Dedicated Control Channel
  • DTCH Dedicated Traffic Channel
  • CCCH which transmits control signals between a plurality of mobile station apparatuses and a mobile communication network
  • DCCH which transmits control signals between individual mobile station apparatuses and the mobile communication network
  • DTCH which is a one-to-one channel between the mobile communication network and the individual mobile station apparatuses, is used for transmitting uplink user data.
  • a part of the control information bits can be transmitted using a part of the radio resource of PUCCH, instead of PUCCH.
  • the downlink uses the natural frequency bandwidth BW of the base station apparatus. As shown in FIGS. 6 and 9 , the radio physical channel described below is mapped.
  • SCH Synchronization Channel
  • SCH is inserted in the downlink radio frame.
  • SCH is used for initial synchronization of OFDM reception signals, cell selection, and cell search for reselection or cell handover during communication, for example.
  • SCH includes carrier frequency offset synchronization, OFDM symbol timing synchronization, radio frame timing synchronization, related information of specific CPID (Cell Physical Identification), related information of the cell physical configuration, or the like.
  • SCH is composed of two subchannels, a P-SCH (Primary SCH) and an S-SCH (Secondary SCH).
  • the P-SCH and the S-SCH are downlink cell common control channels DCCCCH.
  • PBCH Physical Broadcast Channel
  • PBCH is a downlink cell common control channel DCCCCH.
  • PDSCH Physical Downlink Shared Channel
  • DL-SCH Downlink Shared Channel
  • BCCH Broadcast Control Channel
  • CCCH Common Control Channel
  • DCCH Dedicated Control Channel
  • DTCH Dedicated Traffic Channel
  • MCCH Multicast Control Channel
  • MTCH MBMS Traffic Channel of MBMS (Multimedia Broadcast Multicast Service).
  • the paging channel PCH includes PCCH (Paging Control Channel) of the logical channel.
  • PCCH Packet Control Channel
  • transmission methods of MBMS there are a method in which only one base station performs transmission and a method in which a plurality of base stations synchronizing with time and frequency perform transmission simultaneously.
  • the former is referred to as SCPTM (Single-Cell Point-to-Multipoint) and the latter is referred to as MBSFN (Multimedia Broadcast multicast service Single Frequency Network).
  • SCPTM Single-Cell Point-to-Multipoint
  • MBSFN Multimedia Broadcast multicast service Single Frequency Network
  • MBMS transmission signals of a MBSFN cell that provides MBSFN service identical MBMS signals are simultaneously transmitted by a plurality of base station apparatuses so that MBMS reception signals of a plurality of MBSFN cells can be synthesized for the mobile station apparatus.
  • MCCH and MTCH are downlink cell common traffic channels DCCTCH for the case of an MBSFN cell.
  • BCCH, CCCH and PCCH are downlink cell common control channels DCCCCH.
  • DTCH is a downlink cell dedicated traffic channel DCDTCH.
  • DCCH is a downlink cell dedicated control channel DCDCCH.
  • PDCCH Physical Downlink Control Channel transmits radio resource allocation information bits of DL-SCH and PCH of the transport channel included in PDSCH, information bits of HARQ associated with DL-SCH, and Uplink scheduling grant signaling.
  • PDCCH is a downlink cell dedicated control channel DCDCCH.
  • PHICH Physical Hybrid ARQ Indicator Channel
  • PHICH Physical Hybrid ARQ Indicator Channel
  • PHICH is a downlink cell dedicated control channel DCDCCH.
  • PCFICH Physical Control Format Indicator Channel
  • PDCCH Physical Downlink control channel
  • PCFICH is a downlink cell common control channel DCCCCH.
  • PMCH Physical Multicast Channel
  • MCH Multicast Channel
  • MCCH and MTCH as shown in FIG. 9 , here we temporarily define MCCH and MTCH as a downlink cell common traffic channel DCCTCH in case of MBSFN cell and define them as a downlink cell dedicated traffic channel DCDTCH in case of SCPTM, because their specification is under consideration.
  • DCCTCH downlink cell common traffic channel
  • DCDTCH downlink cell dedicated traffic channel
  • downlink radio channels such as those mentioned above, there are a downlink cell common control channel DCCCCH and a downlink cell common traffic channel DCCTCH which are required to cover the entire cell area and assure a predetermined reception quality down to a mobile station apparatus at the cell edge. Since they have to cover the entire cell area, frequency use efficiency of DCCCCH and DCCTCH is low.
  • the downlink cell common control channel DCCCCH and downlink cell common traffic channel DCCTCH are not suitable to be transmitted in a high-frequency band because there are, in the high-frequency band, outstanding rectilinear radio propagation property, large radio propagation loss, large building entry loss, and further, large Doppler spread relative to the movement speed.
  • the present invention has been made in view of the above circumstances, and proposes, as a method of assigning radio channels in a mobile communication system having a plurality of frequency bands, a method of preliminarily assigning all downlink cell common control channels DCCCCH and downlink cell common traffic channels DCCTCH constituting the mobile communication system to a low-frequency band, and adaptively assigning a downlink cell dedicated control channel DCDCCH and a downlink cell dedicated traffic channel DCDTCH to a low-frequency layer and/or a high-frequency layer according to a radio propagation status and a communication requirement.
  • a communication system of the present invention is a communication system which performs radio communication between a base station apparatus and a mobile station apparatus using a plurality of frequency layers having frequency bands different from each other, wherein the base station apparatus assigns a downlink cell common control channel and a downlink cell common traffic channel to a low-frequency layer, and assigns a downlink cell dedicated control channel and a downlink cell dedicated traffic channel to a low-frequency layer and/or a high-frequency layer according to a downlink channel status and a communication requirement from the mobile station apparatus.
  • the downlink cell common control channel DCCCCH and downlink cell common traffic channel DCCTCH are assigned to a low-frequency layer in this manner, it becomes possible to improve reliability and stability of the entire system, and improve frequency use efficiency of the entire system. Additionally, since the downlink cell dedicated control channel DCDCCH and downlink cell dedicated traffic channel DCDTCH are assigned to a low-frequency layer and/or a high-frequency layer according to the downlink channel status and the communication requirement of the mobile station apparatus, it becomes possible to provide an ultra high data transmission speed to a mobile station apparatus moving at low speed, and provide the maximum data transmission speed in the system to a mobile station apparatus moving at high speed, and to flexibly respond to various communication requirements, thus making it possible to provide a next generation mobile communication system which can satisfy requirements of IMT-Advanced, that is, 100 Mbps for high speed movement and 1 Gbps for low speed movement in the downlink, utilizing frequency-bandwidth limited IMT frequency band of 3 GHz.
  • IMT-Advanced that is, 100 Mbps for high speed movement and 1 G
  • the base station apparatus receives a numerical value indicating the channel status of the mobile station apparatus, compares the numerical value indicating the channel status with a predetermined threshold value, and, if the numerical value indicating the channel status is smaller than the threshold value, assigns a downlink cell dedicated control channel and a downlink cell dedicated traffic channel to a low-frequency layer.
  • the downlink cell dedicated control channel DCDCCH and downlink cell dedicated traffic channel DCDTCH are assigned to a low-frequency layer in this manner if the numerical value indicating the channel status is smaller than the threshold value, it is possible to provide the maximum data transmission speed in the system to the mobile station apparatus moving at high speed while maintaining the continuity of communication, for example, and to flexibly respond to various communication requirements.
  • the base station apparatus receives a numerical value indicating the channel status of the mobile station apparatus, compares the numerical value indicating the channel status with a predetermined threshold value, and, if the numerical value indicating the channel status is larger than the threshold value, determines the communication requirement of the mobile station apparatus, and assigns a downlink cell dedicated control channel and a downlink cell dedicated traffic channel to a high-frequency layer if the communication requirement of the mobile station apparatus is a second communication requirement, and assigns a downlink cell dedicated control channel and a downlink cell dedicated traffic channel to a low-frequency layer and a high-frequency layer if the communication requirement of the mobile station apparatus is a third communication requirement or a fourth communication requirement.
  • the numerical value indicating the channel status is larger than the threshold value, communication requirements of the mobile station apparatus are determined and the downlink cell dedicated control channel DCDCCH and downlink cell dedicated traffic channel DCDTCH are assigned to a high-frequency layer if the communication requirement of the mobile station apparatus is a second communication requirement, and the downlink cell dedicated control channel DCDCCH and downlink cell dedicated traffic channel DCDTCH are assigned to a low-frequency layer and a high-frequency layer if the communication requirement from the mobile station apparatus is a third communication requirement or a fourth communication requirement. Consequently, it becomes possible to flexibly respond to various communication requirements, and to improve reliability and stability of the entire system, and improve frequency use efficiency of the entire system.
  • the base station apparatus determines the communication requirement of the mobile station apparatus, and assigns a downlink cell dedicated control channel and a downlink cell dedicated traffic channel to a low-frequency layer if the communication requirement of the mobile station apparatus is a first communication requirement, assigns a downlink cell dedicated control channel and a downlink cell dedicated traffic channel to a high-frequency layer if the communication requirement of the mobile station apparatus is a second communication requirement, and assigns a downlink cell dedicated control channel and a downlink cell dedicated traffic channel to a low-frequency layer and a high-frequency layer if the communication requirement of the mobile station apparatus is a third communication requirement or a fourth communication requirement.
  • the downlink cell dedicated control channel DCDCCH and downlink cell dedicated traffic channel DCDTCH are assigned to a high-frequency layer if the communication requirement is a second communication requirement, and the downlink cell dedicated control channel DCDCCH and downlink cell dedicated traffic channel DCDTCH are assigned to a low-frequency layer and a high-frequency layer if the communication requirement of the mobile station apparatus is a third communication requirement or a fourth communication requirement, it becomes possible to flexibly respond to various communication requirements, and to improve reliability and stability of the entire system, and improve frequency use efficiency of the entire system.
  • the base station apparatus of the present invention is a base station apparatus which performs radio communication with a mobile station apparatus using a plurality of frequency layers having frequency bands different from each other, the base station apparatus comprising: a determination unit which determines a downlink channel status of the mobile station apparatus and a communication requirement of the mobile station apparatus; and a mapping unit which assigns a downlink cell common control channel and a downlink cell common traffic channel to a low-frequency layer and assigns a downlink cell dedicated control channel and a downlink cell dedicated traffic channel to a low-frequency layer and/or a high-frequency layer based on a downlink channel status of a mobile station apparatus and a communication requirement of the mobile station apparatus as a result of the determination.
  • the downlink cell common control channel DCCCCH and downlink cell common traffic channel DCCTCH are assigned to a low-frequency layer, it becomes possible to improve reliability and stability of the entire system, and to improve frequency use efficiency of the entire system.
  • the downlink cell dedicated control channel DCDCCH and downlink cell dedicated traffic channel DCDTCH are assigned to a low-frequency layer and/or a high-frequency layer according to the downlink channel status and the communication requirement of the mobile station apparatus, it is possible to provide a next generation mobile communication system which can provide an ultra high data transmission speed to a mobile station apparatus moving at low speed, and the maximum data transmission speed in the system to a mobile station apparatus moving at high speed and flexibly respond to various communication requirements, and to satisfy requirements of IMT-Advanced, that is, 100 Mbps for high speed movement and 1 Gbps for low speed movement in the downlink, utilizing frequency-bandwidth limited IMT frequency band of 3 GHz.
  • the determination unit compares a numerical value indicating a channel status of the mobile station apparatus with a predetermined threshold value, and the mapping unit assigns a downlink cell dedicated control channel and a downlink cell dedicated traffic channel to a low-frequency layer, if, as a result of the comparison, the numerical value indicating the channel status is smaller than the threshold value.
  • the downlink cell dedicated control channel DCDCCH and downlink cell dedicated traffic channel DCDTCH are assigned to a low-frequency layer if the numerical value indicating the channel status is smaller than the threshold value, it is possible to provide the maximum data transmission speed in the system to the mobile station apparatus moving at high speed while maintaining the continuity of communication, for example, and to flexibly respond to various communication requirements.
  • the determination unit compares a numerical value indicating a channel status of the mobile station apparatus with a predetermined threshold value and if, as a result of the comparison, the numerical value indicating the channel status is larger than the threshold value, determines the communication requirement of the mobile station apparatus; and the mapping unit assigns a downlink cell dedicated control channel and a downlink cell dedicated traffic channel to a high-frequency layer, if, as a result of the determination, the communication requirement of the mobile station apparatus is a second communication requirement, and assigns a downlink cell dedicated control channel and a downlink cell dedicated traffic channel to a low-frequency layer and a high-frequency layer if the communication requirement of the mobile station apparatus is a third communication requirement or a fourth communication requirement.
  • the communication requirement of the mobile station apparatus is determined, and the downlink cell dedicated control channel DCDCCH and downlink cell dedicated traffic channel DCDTCH are assigned to a high-frequency layer if the communication requirement of the mobile station apparatus is a second communication requirement, and the downlink cell dedicated control channel DCDCCH and downlink cell dedicated traffic channel DCDTCH are assigned to a low-frequency layer and a high-frequency layer if the communication requirement from the mobile station apparatus is a third communication requirement or a fourth communication requirement, it becomes possible to flexibly respond to various communication requirements, and to improve reliability and stability of the entire system, and improve frequency use efficiency of the entire system.
  • the determination unit determines the communication requirement of the mobile station apparatus, and the mapping unit assigns a downlink cell dedicated control channel and a downlink cell dedicated traffic channel to a low-frequency layer if, as a result of the determination, the communication requirement of the mobile station apparatus is a first communication requirement, assigns a downlink cell dedicated control channel and a downlink cell dedicated traffic channel to a high-frequency layer if the communication requirement of the mobile station apparatus is a second communication requirement, and assigns a downlink cell dedicated control channel and a downlink cell dedicated traffic channel to a low-frequency layer and a high-frequency layer if the communication requirement of the mobile station apparatus is a third communication requirement or a fourth communication requirement.
  • the downlink cell dedicated control channel DCDCCH and the downlink cell dedicated traffic channel DCDTCH are assigned to a high-frequency layer if the communication requirement is a second communication requirement, and the downlink cell dedicated control channel DCDCCH and downlink cell dedicated traffic channel DCDTCH are assigned to a low-frequency layer and a high-frequency layer if the communication requirement of the mobile station apparatus is a third communication requirement or a fourth communication requirement, it becomes possible to flexibly respond to various communication requirements, and to improve reliability and stability of the entire system, and improve frequency use efficiency of the entire system.
  • the mobile station apparatus of the present invention is a mobile station apparatus which performs radio communication with a base station apparatus using a plurality of frequency layers having frequency bands different from each other, wherein the mobile station apparatus receives from the base station apparatus a downlink cell common control channel and a downlink cell common traffic channel assigned to a low-frequency layer, and receives from the base station apparatus a downlink cell dedicated control channel and a downlink cell dedicated traffic channel assigned to a low-frequency layer and/or a high-frequency layer according to a downlink channel status and a communication requirement.
  • the downlink cell common control channel DCCCCH and downlink cell common traffic channel DCCTCH are assigned to a low-frequency layer, it becomes possible to improve reliability and stability of the entire system and to improve frequency use efficiency of the entire system.
  • the downlink cell dedicated control channel DCDCCH and downlink cell dedicated traffic channel DCDTCH are assigned to a low-frequency layer and/or a high-frequency layer according to the downlink channel status and the communication requirement of the mobile station apparatus, it is possible to provide a next generation mobile communication system which can provide an ultra high data transmission speed to a mobile station apparatus moving at low speed, and the maximum data transmission speed in the system to a mobile station apparatus moving at high speed, and flexibly respond to various communication requirements, and to satisfy requirements of IMT-Advanced, that is, 100 Mbps for high speed movement and 1 Gbps for low speed movement in the downlink, utilizing a frequency-bandwidth limited IMT frequency band of 3 GHz.
  • a downlink cell common control channel DCCCCH and downlink cell common traffic channel DCCTCH are assigned to a low-frequency layer, it becomes possible to improve reliability and stability of the entire system and to improve frequency use efficiency of the entire system.
  • a downlink cell dedicated control channel DCDCCH and downlink cell dedicated traffic channel DCDTCH are assigned to a low-frequency layer and/or a high-frequency layer according to a downlink channel status and a communication requirement of the mobile station apparatus, it is possible to provide a next generation mobile communication system which can provide an ultra high data transmission speed to a mobile station apparatus moving at low speed, and the maximum data transmission speed in the system to a mobile station apparatus moving at high speed and flexibly respond to various communication requirements, and to satisfy requirements of IMT-Advanced, that is, 100 Mbps for high speed movement and 1 Gbps for low speed movement in the downlink, utilizing a frequency-bandwidth limited IMT frequency band of 3 GHz.
  • FIG. 1 illustrates a configuration of a mobile communication system according to a present embodiment
  • FIG. 2 illustrates a configuration of another mobile communication system according to the present embodiment
  • FIG. 3 illustrates a configuration of radio channels in a mobile communication system according to the present embodiment
  • FIG. 4 illustrates a configuration of radio channels in a mobile communication system according to the present embodiment
  • FIG. 5 illustrates a schematic configuration of a base station apparatus according to the present embodiment
  • FIG. 6 illustrates a configuration of a radio frame
  • FIG. 7 illustrates a configuration of a radio frame
  • FIG. 8 illustrates a schematic configuration of a mobile station apparatus according to the present embodiment
  • FIG. 9 illustrates the correspondence relationship between a radio physical channel, a transport channel, and a logical channel in EUTRA
  • FIG. 10 illustrates a status of a cell area covered by a base station apparatus 40 a
  • FIG. 11 is a flow chart illustrating a procedure of assigning a downlink cell dedicated control channel DCDCCH and a downlink cell dedicated traffic channel DCDTCH of a base station apparatus to a low-frequency layer and/or a high-frequency layer;
  • FIG. 12 illustrates the relationship between a user data transmission speed and a movement speed of the mobile station apparatus
  • FIG. 13 illustrates an exemplary use of a plurality of frequency bands in a communication system
  • FIG. 14 illustrates a status of a cell area covered by a base station apparatus
  • FIG. 15 is a flow chart illustrating a procedure of assigning a downlink cell dedicated control channel DCDCCH and a downlink cell dedicated traffic channel DCDTCH of a base station apparatus to a low-frequency layer and/or a high-frequency layer.
  • ADC digital-to-analog converter
  • control/storage unit 508 control/storage unit
  • the embodiment of the present invention proposes a method which, considering radio propagation characteristics of different frequency bands based on a radio channel configuration in EUTRA shown in FIG. 9 , preliminarily assigns, at the time of system construction, all downlink cell common control channels DCCCCH and downlink cell common traffic channels DCCTCH constituting the system to a low-frequency band as a single mobile communication system, and assigns a downlink cell dedicated control channel DCDCCH and a downlink cell dedicated traffic channel DCDTCH to a low-frequency layer and/or a high-frequency layer according to a downlink radio propagation status and a communication requirement.
  • FIG. 1 illustrates a configuration of a mobile communication system according to the present embodiment.
  • the mobile communication system comprises two frequency bandwidths having center frequencies significantly different from each other, i.e., two FLs (Frequency Layer).
  • a first frequency layer FL 1 has a frequency bandwidth BW 1 and uses a low-frequency band, for example, 2.3 to 2.4 GHz, 698 to 806 MHz, or 450 to 470 MHz, of the existing IMT-2000 Plan Band or IMT Band.
  • a second frequency layer FL 2 has a frequency bandwidth BW 2 and uses a high-frequency band, for example, 3.4 to 3.6 GHz, of the IMT Band.
  • FL 2 has more outstanding rectilinear radio propagation property, larger radio propagation loss, larger building entry loss, and larger Doppler spread relative to the movement speed.
  • cover areas 10 a , 10 b and 10 c of FL 1 are larger than cover areas 20 a , 20 b and 20 c of FL 2 .
  • Cover areas of FL 2 are discontinuous.
  • FIG. 2 illustrates a configuration of another mobile communication system according to the present embodiment.
  • cover areas 20 a and 20 c of FL 2 of the macrocells NB 2 and NB 3 can overlap, considering the macro cell placement.
  • a new radio access method INRI which will be standardized in 3GPP or the like in the future and is suitable for 3 GHz frequency band can be employed as the radio access method in FL 2
  • a radio access method suitable for a frequency band of 3 GHz or lower such as existing 2G and 3G (e.g., UTRA, EUTRA, EUTRA Plus, LTE Plus, LTE-Advanced) standardized in 3GPP or the like, or a new radio access method INRI which will be standardized in 3GPP or the like in the future and is suitable for a frequency band of 3 GHz or lower, can be employed as the radio access method in FL 1 .
  • FL 1 cover areas 10 a, 10 b and 10 c support an IMT-Advanced request condition of 100 Mbps for high speed movement in the downlink in the frequency bandwidth BW 1 , thus supporting a mobile station apparatus moving at high speed.
  • FL 2 cover areas 10 a , 10 b and 10 c support an IMT-Advanced request condition of 1 Gbps for low speed movement in the frequency bandwidth BW 2 , thus supporting a mobile station apparatus moving at low speed.
  • FIGS. 3 and 4 illustrate a configuration of radio channels in the mobile communication system according to the present embodiment.
  • the uplink is assigned to a frequency bandwidth BW 1 a in FL 1
  • the downlink is assigned to a frequency bandwidth BW 1 b in FL 1 and a frequency bandwidth BW 2 a in FL 2 .
  • the system bandwidths BW 1 a and BW 1 b of FL 1 can use frequency bandwidths such as 20 MHz, 15 MHz, 10 MHz, 5 MHz or the like
  • the system bandwidth BW 2 a of FL 2 transmission frequency bandwidth of the base station apparatus
  • the system bandwidth BW 2 a of FL 2 can use frequency bands such as 100 MHz, 50 MHz, 20 MHz or the like, which are broader than FL 1 .
  • radio channels required for a single mobile communication system are assigned.
  • the uplink of the mobile communication system assigns uplink physical channels such as a physical random access channel of FL 1 (FL 1 _PRACH), a physical uplink control channel of FL 1 (FL 1 _PUCCH), a physical uplink shared channel of FL 1 (FL 1 _PUSCH) or the like.
  • FL 1 _PRACH is also used at the time of initial access in FL 2 , at the time of handover within FL 1 and between FL 1 and FL 2 , and at the time of data generation in the downlink of FL 1 and/or FL 2 .
  • FL 1 _PUCCH is also used for transmitting Hybrid ARQ ACK/NAK information bits, transmitting CQI information bits of downlink quality information of FL 1 and/or FL 2 estimated by the mobile station apparatus, transmitting the number of transmission data streams (which depends on the number of transmission antennas) and transmission pre-coding code book number information bits of the base station apparatus selected according to the reception status of the mobile station apparatus, and transmitting FL 2 control information bits such as result of measurements of the mobile station apparatus in FL 1 and/or FL 2 and of a base station apparatus.
  • FL 1 _PUSCH transmits uplink user data DTCH and control signals CCCH and DCCH.
  • FL 1 _PUSCH can transmit a part of FL 1 and/or FL 2 control information bits using a part of the wireless resources of FL 1 _PUSCH instead of FL 1 _PUCCH.
  • FL 1 _SCH Using the frequency bandwidth BW 1 a in FL 1 , apart of the downlink of the mobile communication system assigns a synchronization channel of FL 1 (FL 1 _SCH), a broadcast channel of FL 1 (FL 1 _PBCH), a physical downlink shared channel of FL 1 (FL 1 _PDSCH), a physical downlink control channel of FL 1 (FL 1 _PDCCH), a physical Hybrid ARQ indication channel of FL 1 (FL 1 _PHICH), a physical control channel format indication channel of FL 1 (FL 1 _PCFICH), and a physical multicast channel of FL 1 (FL 1 _PMCH).
  • FL 1 _SCH and FL 1 _PBCH are DCCCCHs.
  • FL 1 _DL-SCH and PCH corresponding to FL 1 _PDSCH include BCCH, CCCH, DCCH, PCCH, DTCH, MCCH and MTCH.
  • DCCH and DTCH can be mapped onto FL 1 _PDSCH and/or FL 2 _PDSCH, depending on radio propagation status in BW 1 b of FL 1 and BW 2 a of FL 2 , and communication requirements such as the movement speed of the mobile station apparatus, the desired data transmission speed, the desired communication quality requirement, or the like.
  • FL 1 _PDCCH transmits, radio resource allocation information bits of FL 1 _DL-SCH and PCH, information bits of Hybrid ARQ associated with FL 1 _DL-SCH, or an Uplink scheduling grant signal (control signal).
  • BCCH, CCCH and PCCH are DCCCCHs, whereas DTCH is a DCDTCH.
  • MCCH and MTCH are DCCTCHs in the case of MNSFN, whereas MCCH and MTCH are DCDTCHs in the case of SCPTM.
  • FL 1 _PHICH transmits Hybrid ARQ ACK/NAKs information bits corresponding to the uplink FL 1 _PUSCH.
  • FL 1 _PHICH is a DCDCCH.
  • the physical multicast channel FL 1 _PMCH is used for MBMS.
  • MCCH and MTCH can be assigned to MCH.
  • CCCH includes RRC messages associated with FL 1 and/or FL 2 . Specifically, RRC messages such as RRC CONNECTION SETUP of an FL 2 downlink, RRC CONNECTION RE-ESTABLISHMENT REJECT/REQUEST, for example, are included.
  • the physical control format indication channel PCFICH transmits information bits of the number of the OFDM symbols used in the physical downlink control channel of FL 1 (FL 1 _PDCCH) and the physical downlink control channel of FL 2 (FL 2 _PDCCH).
  • FL 2 _PDSCH physical downlink shared channel of FL 2
  • FL 2 _PDCCH physical downlink control channel of FL 2
  • FL 2 _PHICH physical Hybrid ARQ indication channel of FL 1
  • DCCH and DTCH are included in FL 2 _DL-SCH corresponding to FL 2 _PDSCH.
  • DCCH and DTCH can be mapped onto FL 1 _PDSCH and/or FL 2 _PDSCH, depending on radio propagation status in BW 1 b of FL 1 and BW 2 a of FL 2 , and communication requirements such as the movement speed of the mobile station apparatus, the desired data transmission speed, the desired communication quality requirement, or the like.
  • FL 2 _PDCCH transmits radio resource allocation information bits of FL 2 _DL-SCH and information bits of Hybrid ARQ associated with FL 2 _DL-SCH.
  • FIG. 3 illustrates the radio access method of FL 1 in FDD, it may be in TDD.
  • FIG. 5 illustrates a schematic configuration of a base station apparatus according to the present embodiment.
  • the base station apparatus comprises an antenna unit 422 , an RF signal processor 407 , a baseband signal processor 408 and a control/storage unit 404 . If the uplink and downlink support MIMO, a plurality of antenna units, RF signal processors, and baseband signal processors are included.
  • the antenna unit 422 includes an uplink reception antenna 403 of FL 1 , a downlink transmission antenna 402 of FL 1 , and a downlink transmitting antenna 401 of FL 2 .
  • a single reception and transmission antenna may be shared as the antennas of FL 1 .
  • the RF signal processor 407 includes filter units 409 , 413 and 417 having respectively frequency bandwidths BW 2 a , BW 1 b and BW 1 a corresponding to respective antennas, and an RF transmitter 414 of FL 1 , an RF receiver 418 of FL 1 , and a transmitter 410 of FL 2 .
  • the baseband signal processor has an analog-to-digital converter 419 , digital-to-analog converters 411 and 415 , an OFDM transmission signal processor 416 of FL 1 , an OFDM reception signal processor 420 of FL 1 , an OFDM transmission signal processor 412 of FL 2 , a physical channel mapping unit 406 , a physical channel demapping unit 405 , and an uplink channel measurement unit 421 .
  • Transmission data transmitted from a core network is input to the physical channel mapping unit 406 and mapped onto each downlink physical channel shown in FIGS. 3 and 4 .
  • the physical channel mapping unit 406 generates a Primary SCH sequence and a Secondary SCH sequence based on cell ID information included in the transmission data.
  • FIGS. 6 and 7 illustrate a configuration of a radio frame.
  • BCCH broadcast data
  • data-modulation is performed according to a fixed modulation/encoding system, and the modulated data is mapped onto a fixed OFDM symbol and subcarrier to generate a broadcast channel FL 1 _PBCH, as shown in FIG. 6 .
  • DTCH user data
  • BCCH broadcast data
  • MCCH MBMS data
  • PCCH dedicated upper layer control data
  • DCCH dedicated upper layer control data
  • CCCH common upper layer control data
  • DTCH and DCCH can be mapped onto FL 1 _PDSCH and/or FL 2 _PDSCH, using handover control data from the communication condition determination unit 423 of the control/storage unit 404 , depending on radio propagation status in BW 1 b of FL 1 and BW 2 a of FL 2 as well as communication requirements such as the movement speed of the mobile station apparatus, the desired data transmission speed, and the desired communication quality requirement.
  • the common upper layer control data includes RRC messages associated with FL 1 and/or FL 2 .
  • RRC messages such as RRC CONNECTION SETUP or RRC CONNECTION RE-ESTABLISHMENT REJECT/REQUEST of FL 2 downlink RB (Radio Bearer) are mapped onto FL 1 _PDSCH.
  • data modulation is performed according to a fixed modulation/encoding system and the modulated data is mapped onto the fixed OFDM symbol and subcarrier to generate a physical downlink control channel FL 1 _PDCCH, as shown in FIG. 6 .
  • data modulation is performed according to a fixed modulation/encoding system and the modulated data is mapped onto a fixed OFDM symbol and subcarrier to generate a physical HARQ indication channel FL 1 _PHICH, as shown in FIG. 6 .
  • data modulation is performed according to a fixed modulation/encoding system and the modulated data is mapped onto a fixed OFDM symbol and subcarrier to generate a physical control channel format indication channel FL 1 _PCFICH, as shown in FIG. 6 .
  • the MBMS data (MTCH, MCCH) included in the transmission data data modulation is performed according to a predetermined modulation/encoding system and the modulated data is mapped onto a predetermined OFDM symbol and subcarrier to generate a physical multicast channel FL 1 _PMCH, as shown in FIG. 6 .
  • the user data (DTCH) and the dedicated upper layer control data (DCCH) included in the transmission data are data-modulated according to a predetermined modulation/encoding system and mapped onto a predetermined OFDM symbol and subcarrier to generate the physical downlink shared channel of FL 2 (FL 2 _PDSCH), as shown in FIG. 7 .
  • DTCH and DCCH can be mapped onto FL 1 _PDSCH and/or FL 2 _PDSCH, depending on radio propagation status in BW 1 b of FL 1 and BW 2 a of FL 2 , as well as the communication requirements such as the movement speed of the mobile station apparatus, the desired data transmission speed, and the desired communication quality requirement.
  • FL 1 _PBCH, FL 1 _PDSCH, FL 1 _PDCCH, FL 1 _PHICH, FL 1 _PCFICH, FL 1 _SCH, and FL 1 _PMCH generated by the physical channel mapping unit 406 are transmitted to the downlink of FL 1 via the OFDM transmission signal processor 416 , the RF transmitter 414 , and the like.
  • data modulation is performed according to a fixed modulation/encoding system and the modulated data is mapped onto a fixed OFDM symbol and subcarrier to generate the physical downlink control channel of FL 2 (FL 2 _PDCCH), as shown in FIG. 7 .
  • data modulation is performed according to a fixed modulation/encoding system and the modulated data is mapped onto a fixed OFDM symbol and subcarrier to generate the physical HARQ indication channel of FL 2 (FL 2 _PHICH), as shown in FIG. 6 .
  • the radio signal transmitted from the uplink of FL 1 is converted into a baseband digital signal by the antenna 403 , the RF receiver 418 , the OFDM reception signal processor 420 , and the like, and input to the physical channel demapping unit 405 , where the physical random access channel of FL 1 (FL 1 _PRACH), the physical uplink control channel of FL 1 (FL 1 _PUCCH), and the FL 1 _physical uplink shared channel FL 1 _PUSCH shown in FIGS. 3 and 4 are extracted.
  • the base station apparatus Based on the measurement result information bits of the radio propagation status in BW 1 b of FL 1 included in FL 1 _PUCCH and BW 2 a of FL 2 , as well as communication requirement parameters such as the movement speed of the mobile station apparatus, the desired data transmission speed, and the desired communication quality requirement, it is determined whether or not to map the user data (DTCH) and dedicated upper layer control data (DCCH) included in the transmission data onto FL 1 _DPSCH and/or FL 2 _DPSCH. Without transmission of the communication requirement parameter such as the movement speed of the mobile station apparatus, desired data transmission speed, and desired communication quality requirement from the mobile station apparatus, the base station apparatus itself can calculate them from various communication parameters.
  • DTCH user data
  • DCCH dedicated upper layer control data
  • FIG. 8 illustrates a schematic configuration of the mobile station apparatus according to the present embodiment.
  • the mobile station apparatus comprises an antenna unit 521 , an RF signal processor 503 , a baseband signal processor 504 , a channel codec unit 505 , an application processor 506 , and a display/input unit 507 .
  • the uplink and downlink support MIMO, a plurality of antenna units, RF signal processors, and baseband signal processors are included.
  • the antenna unit 521 includes a downlink/uplink reception and transmission antenna 502 of FL 1 and a downlink reception antenna 501 of FL 2 .
  • the RF signal processor 503 includes filter units 514 and 509 having respectively frequency bandwidths BW 1 a , BW 1 b and BW 2 corresponding to respective antennas, an RF transmitter 518 of FL 1 , an RF receiver 515 of FL 1 , and an RF receiver 510 of FL 2 .
  • the baseband signal processor 504 includes analog-to-digital converters 511 and 516 , a digital-to-analog converter 519 , an OFDM transmission signal processor 520 of FL 1 , an OFDM reception signal processor 517 of FL 1 , an OFDM reception signal processor 512 of FL 2 , a cell search/downlink channel measurement unit 513 , a physical channel demapping units 523 and 522 of FL 1 and FL 2 , and a physical channel mapping unit 524 of FL 1 .
  • Transmission data transmitted from the channel codec unit 505 and/or the control/storage unit 508 is input to the physical channel mapping unit 524 and mapped onto each physical channel of the uplink shown in FIGS. 3 and 4 .
  • the transmission data transmitted from the channel codec unit 505 and/or the control/storage unit 508 at the time of initial access, handover, generation of uplink/downlink data, or the like is data-modulated according to a predetermined modulation/encoding system and mapped onto a predetermined OFDM symbol and subcarrier to generate a physical random access channel FL 1 _PRACH.
  • the transmission data transmitted from the channel codec unit 505 and/or the control/storage unit 508 is data-modulated according to a predetermined modulation/encoding system and mapped onto a predetermined OFDM symbol and subcarrier to generate a physical uplink control channel FL 1 _PUCCH.
  • FL 1 _PUCCH transmits control information bits from the mobile station apparatus, and has mapped thereon information bits such as Hybrid ARQ ACK/NAK information bits according to the radio propagation status of BW 1 b of FL 1 and/or BW 2 a of FL 2 of the mobile station apparatus, Scheduling Request information bits requesting the base station apparatus for allocation of uplink radio resources, quality information CQI information bits of BW 1 b of FL 1 and/or BW 2 a of FL 2 estimated from the result of measurement of the cell search/downlink channel measurement unit 513 , and information bits such as the number of transmission data streams (which depends on the number of transmission antennas) of the base station apparatus selected according to the radio propagation status of BW 1 b of FL 1 and/or BW 2 a of FL 2 of the mobile station apparatus and transmission pre-coding code book number, and control information bits such as the result of measurement of the mobile station apparatus.
  • information bits such as Hybrid ARQ ACK/NAK information bits according to the radio propagation status of BW 1
  • data modulation is performed on user data (DTCH), dedicated upper layer control data (DCCH), and common upper layer control data (CCCH) included in the transmission data from the channel codec unit 505 according to a predetermined modulation/encoding system and the modulated data is mapped onto a predetermined OFDM symbol and subcarrier to generate a physical uplink shared channel FL 1 _PUSCH.
  • FL 1 _PUSCH can transmit a part of the control information bits from the mobile station apparatus using a part of the radio resource, instead of FL 1 _PUCCH.
  • Downlink demodulated data transmitted from the OFDM reception signal processors 512 and 517 are input to the physical channel demapping units 522 and 523 , where each physical channel of the downlink shown in FIGS. 3 and 4 is extracted.
  • the FL 1 downlink demodulated data transmitted from the OFDM reception signal processor 517 is input to the physical channel demapping unit 523 , and a synchronization channel FL 1 _SCH, a broadcast channel FL 1 _PBCH, a physical downlink shared channel FL 1 _PDSCH, a physical downlink control channel FL 1 _PDCCH, a physical Hybrid ARQ indication channel FL 1 _PHICH, and a physical multicast channel FL 1 _PMCH are extracted from the predetermined OFDM symbol and subcarrier, as shown in FIG.
  • data of the synchronization channel FL 1 _SCH and the reference signal RS of FL 1 are transmitted to the cell search/downlink channel measurement unit 513 , where radio propagation status of BW 1 b of FL 1 is measured.
  • the measurement result is reported to the base station apparatus via FL 1 _PUCCH as a handover request (HO Request) or a Measurement Report.
  • the physical channel demapping unit 523 extracts RRC messages associated with FL 1 and/or FL 2 from the common upper layer control data (CCCH) included in FL 1 _PDSCH. Specifically, RRC messages such as RRC CONNECTION SETUP and RRC CONNECTION RE-ESTABLISHMENT REJECT/REQUEST of the FL 2 downlink radio bearer RB, for example, are extracted from FL 1 _PDSCH via the physical channel demapping unit 523 .
  • RRC messages such as RRC CONNECTION SETUP and RRC CONNECTION RE-ESTABLISHMENT REJECT/REQUEST of the FL 2 downlink radio bearer RB, for example, are extracted from FL 1 _PDSCH via the physical channel demapping unit 523 .
  • the FL 2 downlink demodulated data transmitted from the OFDM reception signal processor 512 is input to the physical channel demapping unit 522 , where the physical downlink shared channel FL 2 _PDSCH, the physical downlink control channel FL 2 _PDCCH, and the physical Hybrid ARQ indication channel FL 2 _PHICH are extracted from the predetermined OFDM symbol and subcarrier, as shown in FIG. 7 .
  • the data of the reference signal RS of FL 2 is transmitted to the cell search/downlink channel measurement unit 513 , where the radio propagation status of BW 2 a of FL 2 is measured. The measurement result is reported to the base station apparatus via FL 1 _PUCCH as a handover request (HO Request) or a measurement report (Measurement Report).
  • the embodiments of the present invention have proposed a radio channel configuration which, considering the radio propagation characteristics of different frequency bands based on the radio channel configuration in the above-mentioned EUTRA, assigns all downlink cell common control channels DCCCCH and downlink cell common traffic channels DCCTCH constituting the next generation mobile communication system to a low-frequency band without applying them to a high-frequency band, and a data transmission and reception method of a base station apparatus and a mobile station apparatus.
  • deliberation of the new radio access technology INRI of IMT-Advanced and establishment of the specification thereof are yet to be completed and the radio channel configuration of EUTRA as shown in FIG. 9 may not necessarily be adopted.
  • the configuration of and correspondence relationship among radio channels such as physical channels, transport channels, and logical channels may be different, and mapping of user data and control data may be different.
  • the downlink cell common control channel DCCCCH may be replaced by DCCCD (Downlink Cell Common Control Data)
  • the downlink cell common traffic channel DCCTCH may be replaced by DCCTD (Downlink Cell Common Traffic Data)
  • the downlink cell dedicated control channel DCDCCH may be replaced by DCDCD (Downlink Cell Dedicated Control Data)
  • the downlink cell dedicated traffic channel DCDTCH may be replaced by DCDTD (Downlink Cell Dedicated Traffic Data).
  • FIG. 10 illustrates the status of a cell area covered by the base station apparatus 40 a . Since radio propagation loss in FL 2 is larger than that in FL 1 , a cover area 10 a of FL 1 is larger than a cover area 20 a of FL 2 , if transmission powers of the base station apparatus 40 a in FL 1 and FL 2 are identical.
  • the mobile station apparatus 50 receives FL 1 _SCH of FL 1 , selects the base station apparatus 40 a as a camped cell, according to the determination of the cell search/downlink channel measurement unit 513 , and, following positional registration procedures such as reception of FL 1 _BCH, transmission of FL 1 _PRACH, and reception of CCCH of FL 1 _PDSCH, enters an RCC IDLE Mode in the cover area 10 a of FL 1 of the base station apparatus 40 a.
  • the mobile station apparatus When there is call origination from the mobile station apparatus or when there is call termination to the mobile station apparatus such as transmission of FL 1 _PRACH, the mobile station apparatus enters an RCC CONNECTED Mode, following call connection procedures such as reception of FL 1 _PCCH included in FL 1 _PDSCH.
  • RCC CONNECTED Mode reference signals FL 1 _RS and FL 2 _RS of FL 1 and FL 2 of the connected base station apparatus (Serving Cell) 40 a and peripheral base station apparatuses (the base station apparatuses 40 b and 40 c shown in FIG. 1 , for example) are extracted by the cell search/downlink channel measurement unit 513 of the mobile station apparatus from a radio frame structure as shown in FIGS.
  • reception quality indicators of FL 1 _RS and FL 2 _RS of each base station apparatus for example, RSRP (Reference Signal Received Power), RSSI (Receive Signal Strength Indication), and RSRQ (Reference Signal Received Quality) are measured.
  • the measurement result is reported to the base station apparatus (Serving Cell) 40 a via FL 1 _PUCCH as an HO Request or a Measurement Report, either periodically or non-periodically.
  • FIG. 11 is a flow chart illustrating a procedure of assigning a downlink cell dedicated control channel DCDCCH and a downlink cell dedicated traffic channel DCDTCH of the base station apparatus to a low-frequency layer and/or a high-frequency layer. Specifically, an HO Request or a Measurement Report from the mobile station apparatus is received, and the reception quality indicators of FL 1 _RS and FL 2 _RS of each base station apparatus reflecting the downlink radio propagation status, for example, the average received power RSRP is extracted (S 41 ).
  • the received power of FL 2 _RS (FL 2 _RS_RSRP) of the connected base station apparatus (Serving Cell) 40 a is compared with a threshold value 1 and a threshold value 2 (threshold value 2 >threshold value 1 ) preliminarily stored in the control/storage unit 404 of the base station apparatus as system parameters (S 42 , S 43 ), and if FL 2 _RS_RSRP is smaller than the threshold value 1 (Yes in S 42 ), the user data (DTCH) and the dedicated upper layer control data (DCCH) are mapped onto FL 1 _PDSCH (S 47 ). If FL 2 _RS_RSRP is larger than the threshold value 1 and smaller than the threshold value 2 (No in S 43 ), the process flow returns to reception (S 41 ) of the HO Request or the Measurement Report from the mobile station apparatus.
  • the mapping method of DTCH and DCCH is changed according to the communication requirement parameters.
  • the second communication requirement (Yes in S 44 )
  • DTCH and DCCH are mapped onto FL 2 _PDSCH (S 49 ).
  • the third communication requirement (Yes in S 45 )
  • DTCH and DCCH are mapped onto FL 1 _PDSCH and FL 2 _PDSCH, and diversity transmission is performed (S 50 ).
  • the physical channel mapping unit 406 pre-codes the input user data (DTCH) and the dedicated upper layer control data (DCCH) into two identical data streams (which depend on the frequency layer), for example, and maps them onto FL 1 _PDSCH and FL 2 _PDSCH, respectively, thereby realizing transmission diversity through BW 1 b of FL 1 and BW 2 a of FL 2 .
  • SFTD Space Frequency Transmit Diversity
  • STTD Space Time Transmit Diversity
  • FTTD Frequency Time Transmit Diversity
  • DTCH and DCCH are mapped onto two channels, FL 1 _PDSCH and FL 2 _PDSCH, thereby achieving high-speed transmission (S 50 ).
  • the input user data (DTCH) and the dedicated upper layer control data (DCCH) are separated into two different data streams (which depends on the frequency layer) and mapped onto FL 1 _PDSCH and FL 2 _PDSCH, respectively, in the physical channel mapping unit 406 , for example, thereby achieving high data transmission speed through BW 1 b of FL 1 and BW 2 a of FL 2 .
  • an HO Command for assigning a radio channel to the mobile station apparatus is transmitted to the mobile station.
  • the user data performs diversity transmission of two identical data streams (original data stream) via two radio channels FL 1 _PDSCH and FL 2 _PDSCH, thereby providing the mobile station apparatus with a high data transmission speed of 100 Mbps or more, if the movement speed of the mobile station apparatus is medium, i.e. in a range from standstill to walking speed and to a car running at a medium speed of about 60 km/h.
  • the user data transmits a single data stream via a single radio channel FL 2 _PDSCH, thereby providing the mobile station apparatus with a medium data transmission speed of about 100 Mbps, if the movement speed of the mobile station apparatus is high, i.e. in a range from standstill to walking speed and to a car running at a high speed of about 120 km/h.
  • the user data transmits a single data stream via a single radio channel of FL 1 _PDSCH, thereby providing the mobile station apparatus with a low data transmission speed of 100 Mbps or less, if the movement speed of the mobile station apparatus is ultra high, i.e. in a range from standstill to walking speed and to the Shinkansen (Bullet Train) running at a high speed of about 300 km/h.
  • the data streams described herein correspond to different frequency layers.
  • MIMO Multiple Input Multiple Output
  • MIMO Multiple Input Multiple Output
  • the cell search/downlink channel measurement unit 513 can estimate the movement speed of the mobile station apparatus from communication parameters such as Doppler frequency shift of uplink reception signals, uplink channel variation, and uplink reception signal variation speed, and the control/storage unit 508 can estimate the desired data transmission speed and the desired communication quality requirement from communication parameters such as category of the mobile station apparatus, type of service, type of radio bearer RB, and QoS (Quality of Service).
  • the mobile station apparatus can transmit a parameter indicating the communication requirement to the base station apparatus via the radio FL 1 _PUCCH.
  • the communication condition determination unit 423 of the control/storage unit 404 can estimate the movement speed of the mobile station apparatus from communication parameters such as Doppler frequency shift of uplink reception signals, uplink channel variation, uplink reception signal variation speed, and/or HO Request or Measurement Report from the mobile station apparatus. Additionally, it can estimate the desired data transmission speed and the desired communication quality requirement of the mobile station apparatus from communication parameters such as category of the mobile station apparatus reported from the mobile station apparatus at the time of location registration, type of service notified to the mobile station apparatus at the time of RRC CONNECTION SETUP, type of radio bearer RB, and QoS (Quality of Service).
  • communication parameters such as Doppler frequency shift of uplink reception signals, uplink channel variation, uplink reception signal variation speed, and/or HO Request or Measurement Report from the mobile station apparatus. Additionally, it can estimate the desired data transmission speed and the desired communication quality requirement of the mobile station apparatus from communication parameters such as category of the mobile station apparatus reported from the mobile station apparatus at the time of location registration, type of service notified to the
  • MCCH and MTCH can be mapped onto FL 1 _PMCH and/or FL 2 _PMCH (not shown), depending on the radio propagation status in BW 1 b of FL 1 and BW 2 a of FL 2 , as well as communication requirements such as the movement speed of the mobile station apparatus, the desired data transmission speed, and the desired communication quality requirement, similarly to DCCH and DTCH.
  • FIG. 14 illustrates the status of a cell area covered by the base station apparatus 40 a . Since radio propagation loss in FL 2 is larger than that in FL 1 , the cover area 20 a of FL 2 is identical to the cover area 10 a of FL 1 if the base station apparatus 40 a compensates for the radio propagation loss by increasing transmission power in FL 2 .
  • the mobile station apparatus 50 enters, after power-on and following the reception of FL 1 _SCH of FL 1 and the location registration procedure, the RCC IDLE Mode in the cover area 10 a of FL 1 of the base station apparatus 40 a .
  • the mobile station apparatus measures the numerical value indicating the downlink channel status by FL 1 _RS and FL 2 _RS of each base station apparatus. The measurement result is reported to the base station apparatus (Serving Cell) 40 a via FL 1 _PUCCH as an HO Request or a Measurement Report, either periodically or non-periodically.
  • FIG. 15 is a flow chart illustrating a procedure of assigning a downlink cell dedicated control channel DCDCCH and a downlink cell dedicated traffic channel DCDTCH of the base station apparatus to a low-frequency layer and/or a high-frequency layer.
  • an HO Request or a Measurement Report from the mobile station apparatus is received, and the mapping method of DTCH and DCCH is changed according to the communication requirement parameters. Since the allocation method for the second, third and fourth communication requirements is identical to the first allocation method, it is omitted.
  • the user data (DTCH) and the dedicated upper layer control data (DCCH) are mapped onto FL 1 _PDSCH (S 47 ).
  • an HO Command for assigning a radio channel to the mobile station apparatus is transmitted to the mobile station.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
US12/935,294 2008-03-31 2009-03-30 Communication system, base station apparatus, and mobile station apparatus Active 2030-12-08 US8670438B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2008-094352 2008-03-31
JP2008094352 2008-03-31
PCT/JP2009/056486 WO2009123105A1 (ja) 2008-03-31 2009-03-30 通信システム、基地局装置および移動局装置

Publications (2)

Publication Number Publication Date
US20110034177A1 US20110034177A1 (en) 2011-02-10
US8670438B2 true US8670438B2 (en) 2014-03-11

Family

ID=41135479

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/935,294 Active 2030-12-08 US8670438B2 (en) 2008-03-31 2009-03-30 Communication system, base station apparatus, and mobile station apparatus

Country Status (5)

Country Link
US (1) US8670438B2 (de)
EP (1) EP2262334B1 (de)
JP (2) JPWO2009123105A1 (de)
CN (1) CN101981993B (de)
WO (1) WO2009123105A1 (de)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5292276B2 (ja) * 2007-03-01 2013-09-18 株式会社エヌ・ティ・ティ・ドコモ 基地局装置及び通信制御方法
CN101267679B (zh) * 2008-04-26 2013-03-27 中兴通讯股份有限公司 一种用于映射物理随机接入信道的方法
KR101697596B1 (ko) * 2009-01-29 2017-01-18 엘지전자 주식회사 전송 전력을 제어하는 방법 및 이를 위한 장치
CN101931880A (zh) * 2009-06-19 2010-12-29 中兴通讯股份有限公司 一种多媒体广播组播业务动态复用的资源分配方法
KR101443244B1 (ko) * 2009-06-19 2014-09-19 이노베이티브 소닉 코포레이션 Ｍｂｍｓ 동적 스케줄링 정보를 처리하는 방법 및 장치
US9166875B2 (en) * 2009-06-22 2015-10-20 Qualcomm Incorporated Method and apparatus for network optimization using SON solutions
JP4660609B2 (ja) * 2009-06-22 2011-03-30 株式会社エヌ・ティ・ティ・ドコモ 移動通信方法、無線基地局及びリレーノード
WO2011044932A1 (en) * 2009-10-14 2011-04-21 Nokia Siemens Networks Oy Speed dependent component carrier load balance
CN102598753B (zh) 2009-10-27 2015-04-29 日本电气株式会社 移动通信系统、中继站装置、基站装置、无线电中继方法和计算机可读介质
US20110176519A1 (en) * 2009-11-17 2011-07-21 Pavan Kumar Vitthaladevuni Signalling of Multiple-User Multiple-Input and Multiple-Output Transmissions in High-Speed Packet Access Systems
US20110136484A1 (en) * 2009-12-07 2011-06-09 Volker Braun User admission, power, rate and mobility control method for relay communication systems
US9148375B2 (en) 2010-03-15 2015-09-29 Fujitsu Limited Method and system for implementing link adaptation based on mobility
CN102378193B (zh) 2010-08-18 2016-03-02 中兴通讯股份有限公司 一种频谱分配方法和装置
WO2012059994A1 (ja) * 2010-11-04 2012-05-10 富士通株式会社 無線通信方法、中継局、移動局および移動通信システム
EP2661937B1 (de) * 2011-02-14 2019-05-15 Huawei Technologies Co., Ltd. Steuerkanalübertragungs- und empfangsverfahren und system dafür
CN102740469B (zh) * 2011-04-02 2016-08-17 华为技术有限公司 发送上行数据的方法、终端设备、网络侧设备和通信系统
US9680615B2 (en) 2011-05-02 2017-06-13 Blackberry Limited Methods and systems of wireless communication with remote radio heads
US9014020B2 (en) 2011-05-02 2015-04-21 Blackberry Limited Methods and systems of wireless communication with remote radio heads
US20120281640A1 (en) * 2011-05-02 2012-11-08 Research In Motion Limited Methods of PDCCH Capacity Enhancement in LTE Systems Based on a TP-Specific Reference Signal
US20120282936A1 (en) * 2011-05-02 2012-11-08 Research In Motion Limited Methods of PDCCH Capacity Enhancement in LTE Systems
US20130051277A1 (en) * 2011-08-30 2013-02-28 Renesas Mobile Corporation Method and apparatus for allocating resources for device-to-device discovery
US9203592B2 (en) 2011-09-29 2015-12-01 Kyocera Corporation Mobile communication system, base station, and user terminal
CN104968056B (zh) * 2011-11-07 2019-03-01 华为技术有限公司 控制信息传输方法
KR20140070987A (ko) * 2012-12-03 2014-06-11 한국전자통신연구원 다중 대역을 이용하는 무선 링크 방법 및 시스템
CN103079292B (zh) * 2012-12-28 2015-08-26 成都泰格微波技术股份有限公司 一种tdd lte塔顶放大器的高性能射频通道
US9231748B1 (en) * 2013-10-14 2016-01-05 Sprint Spectrum L.P. Frequency channel assignment based on speed
EP3200532A4 (de) * 2014-09-26 2017-10-18 Ntt Docomo, Inc. Mobiles endgerät, basisstation, kommunikationsstatusbenachrichtigungsverfahren und zeitplanungsverfahren
US10587336B2 (en) * 2014-11-05 2020-03-10 Lg Electronics Inc. Method and user device for transceiving data in next generation mobile communication system
EP3197073B1 (de) 2014-11-14 2021-07-14 Huawei Technologies Co., Ltd. Übertragungskontrollmethoden, basisstation und endgerät
CN106465407B (zh) * 2015-04-20 2019-11-26 华为技术有限公司 数据发送方法和设备
WO2018012811A1 (ko) * 2016-07-10 2018-01-18 엘지전자 주식회사 단말이 mbms 서비스를 수신하는 방법 및 이를 지원하는 장치
US10397976B2 (en) 2017-08-25 2019-08-27 Qualcomm Incorporated Network architecture for multi-band operation
EP3758268B1 (de) * 2018-03-26 2023-07-05 LG Electronics Inc. Verfahren zum senden und empfangen von physikalischen signalen und/oder kanälen in einem drahtloskommunikationssystem und vorrichtung dafür
CN113498079B (zh) * 2020-04-01 2023-06-02 维沃移动通信有限公司 测量方法、终端设备和网络设备

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11266262A (ja) 1998-03-18 1999-09-28 Mitsubishi Electric Corp 移動体パケット通信システム
WO2000007399A1 (en) 1998-07-25 2000-02-10 Siemens Aktiengesellschaft Apparatus, method of and system for improving capacity in a communications network
US20020164986A1 (en) 2001-05-04 2002-11-07 Jacques Briand Wireless telecommunications apparatus in particular of UMTS or other third generation type and a method of wireless telecommunication
US20020173277A1 (en) 2001-05-16 2002-11-21 Ntt Docomo, Inc. Mobile communication systems
US20040121780A1 (en) * 2001-04-20 2004-06-24 Markus Nasshan Method and device for transmitting data of a subscriber-specific control channel in a radio system
WO2006047571A1 (en) 2004-10-22 2006-05-04 Qualcomm Incorporated Time multiplexing of unicast and multicast signals on a downlink carrier frequency in a wireless communication system
WO2006100994A1 (ja) 2005-03-24 2006-09-28 Nec Corporation Ｃｄｍａ方式の移動端末、ｃｄｍａ方式の移動通信方法、および通信品質推定方法
JP2007505583A (ja) 2003-05-28 2007-03-08 アイピーワイヤレス，インコーポレイテッド 通信システムにおけるｔｄｄ処理のための方法、基地局及びモバイルステーション
US20090010213A1 (en) * 2005-10-04 2009-01-08 Shohei Yamada Mobile Station Device, Base Station Device, Mobile Station Device Operating Frequency Band Mapping Method, Location Management Device, Mobile Station Device Location Registration Method, Paging Method, and Program for Executing the Same and Recording Medium
US20090163208A1 (en) * 2007-12-19 2009-06-25 Anil Rao Uplink carrier handoff and method for path loss based triggering of uplink carrier handoff
US20110038434A1 (en) * 2005-04-28 2011-02-17 Ntt Docomo, Inc. Radio parameter group generating apparatus, transmitter and receiver

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004153759A (ja) * 2002-11-01 2004-05-27 Clarion Co Ltd 無線通信システム及び無線通信機器
JP2005341432A (ja) * 2004-05-28 2005-12-08 Ntt Docomo Inc 周波数選択装置、移動通信システムおよびマルチバンド制御方法
US20090029710A1 (en) * 2005-02-18 2009-01-29 Mitsubishi Electric Corporation Multi-band radio communication method and base station
JP4531592B2 (ja) * 2005-03-03 2010-08-25 株式会社エヌ・ティ・ティ・ドコモ マルチバンド伝送におけるチャネル割当装置、チャネル割当方法および無線基地局
JP4513974B2 (ja) * 2005-06-27 2010-07-28 日本電気株式会社 優先度の高い情報を同報する無線通信ネットワーク、その変更方法、及び無線通信ネットワーク設計ツール
JP4739354B2 (ja) * 2006-01-23 2011-08-03 シャープ株式会社 基地局装置、移動局装置、移動局識別情報割り当て方法、プログラム及び記録媒体
US20090088212A1 (en) * 2006-04-24 2009-04-02 Panasonic Corporation Radio base station apparatus

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11266262A (ja) 1998-03-18 1999-09-28 Mitsubishi Electric Corp 移動体パケット通信システム
WO2000007399A1 (en) 1998-07-25 2000-02-10 Siemens Aktiengesellschaft Apparatus, method of and system for improving capacity in a communications network
JP2002521988A (ja) 1998-07-25 2002-07-16 シーメンス アクチェンゲゼルシャフト 通信網の容量を改善させる装置、方法及びシステム
US20040121780A1 (en) * 2001-04-20 2004-06-24 Markus Nasshan Method and device for transmitting data of a subscriber-specific control channel in a radio system
US20020164986A1 (en) 2001-05-04 2002-11-07 Jacques Briand Wireless telecommunications apparatus in particular of UMTS or other third generation type and a method of wireless telecommunication
JP2003037869A (ja) 2001-05-04 2003-02-07 Lucent Technol Inc 無線通信装置、特にｕｍｔｓまたは他の第３世代タイプのものおよび無線通信の方法
JP3802372B2 (ja) 2001-05-16 2006-07-26 株式会社エヌ・ティ・ティ・ドコモ 移動通信システム
US20020173277A1 (en) 2001-05-16 2002-11-21 Ntt Docomo, Inc. Mobile communication systems
US7502596B2 (en) 2001-05-16 2009-03-10 Ntt Docomo, Inc. Mobile communication systems
JP2007505583A (ja) 2003-05-28 2007-03-08 アイピーワイヤレス，インコーポレイテッド 通信システムにおけるｔｄｄ処理のための方法、基地局及びモバイルステーション
US20080025236A1 (en) 2003-05-28 2008-01-31 Ipwireless Inc Method, Base Station and Mobile Station for Tdd Operation in a Communication System
WO2006047571A1 (en) 2004-10-22 2006-05-04 Qualcomm Incorporated Time multiplexing of unicast and multicast signals on a downlink carrier frequency in a wireless communication system
WO2006100994A1 (ja) 2005-03-24 2006-09-28 Nec Corporation Ｃｄｍａ方式の移動端末、ｃｄｍａ方式の移動通信方法、および通信品質推定方法
US20090052403A1 (en) 2005-03-24 2009-02-26 Tomoaki Hokao CDMA-Based Mobile Terminal, CDMA-Based Mobile Communication Method, and Communication Quality Estimating Method
US8040866B2 (en) 2005-03-24 2011-10-18 Nec Corporation CDMA-based mobile terminal, CDMA-based mobile communication method, and communication quality estimating method
US20110038434A1 (en) * 2005-04-28 2011-02-17 Ntt Docomo, Inc. Radio parameter group generating apparatus, transmitter and receiver
US20090010213A1 (en) * 2005-10-04 2009-01-08 Shohei Yamada Mobile Station Device, Base Station Device, Mobile Station Device Operating Frequency Band Mapping Method, Location Management Device, Mobile Station Device Location Registration Method, Paging Method, and Program for Executing the Same and Recording Medium
US20090163208A1 (en) * 2007-12-19 2009-06-25 Anil Rao Uplink carrier handoff and method for path loss based triggering of uplink carrier handoff

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
3GPP, Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8), 3GPP TS 36.300 V8.3.0, Dec. 2007.
3GPP, Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Physical Channels and Modulation (Release 8), 3GPP TS 36.211 V8.1.0, Nov. 2007.
3GPP, Technical Specification Group Radio Access Network; Physical channels and mapping of transport channels onto physical channels (FDD) (Release 7), 3GPP TS 25.211 V7.0.0, Mar. 2006.

Also Published As

Publication number Publication date
JP2013085303A (ja) 2013-05-09
EP2262334A1 (de) 2010-12-15
WO2009123105A1 (ja) 2009-10-08
CN101981993A (zh) 2011-02-23
CN101981993B (zh) 2015-08-12
EP2262334A4 (de) 2014-05-14
JPWO2009123105A1 (ja) 2011-07-28
JP5620528B2 (ja) 2014-11-05
EP2262334B1 (de) 2020-03-25
US20110034177A1 (en) 2011-02-10

Similar Documents

Publication Publication Date Title
US8670438B2 (en) Communication system, base station apparatus, and mobile station apparatus
US11516633B2 (en) V2X communication method of terminal in wireless communication system and apparatus using same method
US8837384B2 (en) Physical channel communication method for random access in wireless communication system
RU2587651C2 (ru) Выбор базовой станции (антенны) для передачи по восходящей линии связи зондирующих опорных сигналов, srs
EP2408247B1 (de) Verfahren zur betriebsmittelverteilung, verfahren zur datenübertragung, basisstation und endgerät
US9807634B2 (en) Mobile communication system, and carrier measurement method in the mobile communication system
US20060079235A1 (en) System and method for handover in a broadband wireless access communication system
JP6963026B2 (ja) 複数の搬送波が設定された端末の電力割当方法及び上記方法を利用する端末
EP2039202B1 (de) Betriebsmittelzuteilung für ein koexistenznetzwerk
US20140301228A1 (en) Device-to-device communication method and apparatus for use in wireless communication system
US11095394B2 (en) Method by which terminal blind-decodes physical sidelink control channel (PSCCH) in wireless communication system, and terminal using same
US8855660B2 (en) Mobile communications system, wireless communication apparatus, mobile communications apparatus, and wireless communication method
US20240073769A1 (en) User apparatus, master node and communication system
US20130040691A1 (en) Mobile communication system, base station, mobile station, and radio communication method
US10779211B2 (en) Method and apparatus for acquiring system information
CN118139186A (zh) 通信系统、基站和通信终端
CN116508355A (zh) 频率范围中的测量禁用
US9615353B2 (en) Method and apparatus for allocating physical cell identities in wireless communication system
CN114303423A (zh) 通信系统、通信终端及基站
CN112673684A (zh) 通信系统、通信终端及基站
KR101292577B1 (ko) 무선통신시스템에서 연동 신호 전송 장치 및 방법
JP2018011209A (ja) 通信システム、基地局装置、通信端末装置および通信方法
CN116034613A (zh) 用于部分带宽中的探测参考信号的跳频的方法和装置
US20210360609A1 (en) Utilization of physical resource blocks in a sidelink resource pool
CN117812680A (zh) 用于ue功率节省和ue复杂度降低的技术

Legal Events

Date Code Title Description
AS Assignment

Owner name: SHARP KABUSHIKI KAISHA, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:OH, WAHOH;MACHINO, KATSUYUKI;REEL/FRAME:025194/0879

Effective date: 20100929

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

STCF Information on status: patent grant

Free format text: PATENTED CASE

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551)

Year of fee payment: 4

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Year of fee payment: 8